On Thursday, the California State Senate passed Senate Bill 277, which would eliminate California parents’ ability to opt out of mandatory vaccines for their school children for reasons of “personal belief.” The vote was 25 in favor and 10 against.

Hours of contentious debate in California’s Senate Judiciary Committee resulted in a 5-1 vote earlier this week to advance SB 277, a bill that would eliminate parents’ ability to exempt their children from required vaccinations on the basis of personal belief.

Moms fighting vaccine mandate bill SB277 in the California legislature may have found an ally with the state’s branch of the ACLU given that both question its constitutionality. Moms, some with children, journeyed again to Sacramento on Wednesday to protest the bill

Overwhelming opposition from parents appears to have prevented a California Senate bill from advancing out of committee Wednesday. The bill would strip parents of their right to exempt their children from one or more of doses of vaccinations. Co-author Senator Richard Pan stands behind it, and it appears to be inspired by a measles outbreak that began in Disneyland last December.

Parents opposed to a California legislative effort to revoke their ability to exempt their children from some vaccinations plan to bring their children to a hearing Wednesday before the Senate Education Committee–and promise to yank those kids out of school if the measure passes into law.

California legislators voted a bill through a State Senate committee 6-2 on Wednesday that would eliminate parental ability to opt their school-aged children out of required vaccinations, despite a strong showing from parents opposed and Robert F. Kennedy, Jr., who condemned the bill as “anti-woman and anti-mother” at a rally in Sacramento.